Question: Which one is correct regarding the I / O buffer register 1 . Which one is correct regarding the I / O buffer register Specifies

Which one is correct regarding the I/O buffer register
1. Which one is correct regarding the I/O buffer register
Specifies a particular I/O device
Contains the data to be written into memory or receives the data read from memory
Specifies the address in memory for the next read or write
Used for the exchange of data between an I/O module and the CPU

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